Little Arp Monster vs SetClass

WHAT IT IS Little Arp Monster is a MIDI arpeggiator that goes well beyond the usual. Build patterns from arpeggiated notes, full chords, rests, and even notes outside the chord, then let them evolve across a full arrangement. A finely tuned randomizer creates unique, musical patterns or alters your own, and a single Spice dial lets you decide whether you want classic, tasteful arps or wild ideas no traditional arp is able to generate. It's an arpeggiator for musicians who want to compose, not just repeat. WHAT IT DOES * Step grid: sequence scale degrees, full chords, and rests across 16 steps to build rhythmic patterns. Change the key and every note follows. * Scenes: each comes with its own settings and step grid. Use them for variations on one idea, or completely different motifs. * Arranger: set a progression that plays out over time - swap chord types, shift degrees, transpose the key, or switch scenes exactly when you choose. * Modulation lane: shape Velocity, Cutoff, Decay, or any CC. Locks to the same steps as your notes and follows when you switch scenes. * Randomize and Mutate: both always stay musical. Spice decides how adventurous it gets - from classic tasteful arps to patterns no arp could ever produce. * Built-in audition synth: hear your arp directly in the app without needing a connected instrument. REQUIREMENTS * iPad with iPadOS 15 or later, or iPhone with iOS 15 or later * An AUv3 host that supports MIDI processor plugins, e.g. AUM, Cubasis, or Drambo

Explore the building blocks of modern harmony. This app lets you see, hear and manipulate pitch class sets, the foundation of post-tonal and atonal music theory. EXPLORE • Tap notes on the pitch wheel to build any chord or scale. • See the Forte number, prime form, normal form and interval vector. • Check transpositional and inversional symmetry. • Open the K/Kh complex of any set to see which set classes include it or its complement. FIND • Tap notes on a keyboard, or type a Forte number (3-11, 6-Z44) or pitch-class numbers (0 4 7). • Browse all 224 Forte set classes, with Z-relations, filtered by size. TRANSFORM • Transpose, invert and multiply (M5, M7) any set. • Morph smoothly from one set to another. CREATE • Generate sets by cardinality, symmetry and density. • Arrange sets into rhythmic sequences using P, T, I, R and RI operations, with every inversion level. • Build a serial matrix from rows of 2 to 12 notes. • See each set as geometry in tonal space, with symmetry axes. • Export to MIDI and MusicXML. LEARN • A built-in theory guide. • Analysis examples from Debussy, Schoenberg, Stravinsky, Berg, Messiaen and more, with links to scores. Built for students, composers and theorists, from first-time learners to advanced analysis.